The RF coaxial probes provide return loss better than 10 dB and a maximum operating frequency of 40 GHz. The probes have a 3.5mm and 2.92mm female interface, a pitch of 800 or 1500 micron and they can be cable-mounted. They feature gold-plated contacts and can be used by hand, with or without a probe positioner. Compliant coaxial GSG (or GS) pogo pins allow for a broad range of probing angles.